Re: Can't understand the behaviour of git-diff --submodule

2012-10-30 Thread Jens Lehmann
Am 28.10.2012 01:02, schrieb Jens Lehmann:
 Am 26.10.2012 22:43, schrieb Francis Moreau:
 On Fri, Oct 26, 2012 at 10:05 PM, Jens Lehmann jens.lehm...@web.de wrote:
 [...]

 That is weird, git diff --submodule should show that too. Is there
 anything unusual about your setup? (The only explanation I can come
 up with after checking the code is that your submodule has neither a
 .git directory nor a gitfile or the objects directory in there doesn't
 contain these commits)

 Oh now you're asking, I think the submodule has been added by using
 the --reference option of git-submodule-add.

   $ cd configs
   $ cat .git
   gitdir: ../.git/modules/configs
 
 Thanks, I suspect the --reference option makes the difference here,
 I'll check that as soon as I find some time.

Since 1.7.11 and 1.7.10.3 git does handle submodules with alternates
(which is what --reference uses) correctly. What version are you
seeing this problem with?
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Re: Can't understand the behaviour of git-diff --submodule

2012-10-28 Thread Francis Moreau
On Sun, Oct 28, 2012 at 1:02 AM, Jens Lehmann jens.lehm...@web.de wrote:
 Am 26.10.2012 22:43, schrieb Francis Moreau:
 On Fri, Oct 26, 2012 at 10:05 PM, Jens Lehmann jens.lehm...@web.de wrote:
 [...]

 That is weird, git diff --submodule should show that too. Is there
 anything unusual about your setup? (The only explanation I can come
 up with after checking the code is that your submodule has neither a
 .git directory nor a gitfile or the objects directory in there doesn't
 contain these commits)

 Oh now you're asking, I think the submodule has been added by using
 the --reference option of git-submodule-add.

   $ cd configs
   $ cat .git
   gitdir: ../.git/modules/configs

 Thanks, I suspect the --reference option makes the difference here,
 I'll check that as soon as I find some time.

Yes that's fairly easy to reproduce:

$ mkdir super
$ cd super
$ git init
$ git submodule add --reference ~/tmp/git-submodule/public/a.git
~/tmp/git-submodule/public/a.git a
$ git commit -m Initial creation of super project
$ cd a
$ date a.txt
$ git commit -a -m add to a.txt a random change
$ cd ..
$ git submodule summary
* a 2f8803a...a1aa4bf (1):
   add to a.txt a random change
$ git commit -a -m Include a's changes in super project
$ git diff --submodule=log HEAD~1 HEAD
Submodule a 2f8803a...a1aa4bf (commits not present)

Thanks
-- 
Francis
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Re: Can't understand the behaviour of git-diff --submodule

2012-10-27 Thread Jens Lehmann
Am 26.10.2012 22:43, schrieb Francis Moreau:
 On Fri, Oct 26, 2012 at 10:05 PM, Jens Lehmann jens.lehm...@web.de wrote:
 [...]

 That is weird, git diff --submodule should show that too. Is there
 anything unusual about your setup? (The only explanation I can come
 up with after checking the code is that your submodule has neither a
 .git directory nor a gitfile or the objects directory in there doesn't
 contain these commits)
 
 Oh now you're asking, I think the submodule has been added by using
 the --reference option of git-submodule-add.
 
   $ cd configs
   $ cat .git
   gitdir: ../.git/modules/configs

Thanks, I suspect the --reference option makes the difference here,
I'll check that as soon as I find some time.
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Re: Can't understand the behaviour of git-diff --submodule

2012-10-26 Thread Jens Lehmann
Am 26.10.2012 16:07, schrieb Francis Moreau:
 I'm trying to use the --submodule switch with git-diff but doesnt
 understand the following behaviour:
 
 $ git diff 2c9a257718d1803de720f95766ff256d33accad5 HEAD
 diff --git a/configs b/configs
 index 16c6a89..ce12289 16
 --- a/configs
 +++ b/configs
 @@ -1 +1 @@
 -Subproject commit 16c6a89f245f0eed7fb0bce8e027c59fcf1d543e
 +Subproject commit ce12289c5bfca7b2c423d9f1871c13ad1ba1dc32
 
 but adding the --submodule option gives:
 
 $ git diff --submodule=log 2c9a257718d1803de720f95766ff256d33accad5 HEAD
 Submodule configs 16c6a89...ce12289 (commits not present)
 
 Could anybody enlight me ?

The output Submodule configs 16c6a89...ce12289 (commits not present)
contains same SHA-1s, only in their abbreviated form. That is the same
information you get without the --submodule option, but in shorter
format: it says the submodule moved from 16c6a89 to ce12289 in the
given commit range of the superproject (and the ... part tells us it
wasn't a fast-forward). The (commits not present) part indicates that
even though git diff would have wanted to show you what happened in the
submodule between 16c6a89 and ce12289 by displaying the first line of
each commit message, it couldn't because these commit(s) are not present
in the submodule repo. If you do a git log --oneline 16c6a89...ce12289
inside the submodule you'll get an unknown revision error for the same
reason.

The (commits not present) part should go away and the output of the
short commit messages should appear when you do a git fetch inside the
submodule (at least unless someone forgot to push these submodule commits
upstream). As git fetch does attempt to fetch all referenced submodules
too, I suspect that you have unpushed commits (e.g. they might have been
dropped because of a rebase). In this case a git submodule update will
fail for the same reason.

Does that make it clearer?
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Re: Can't understand the behaviour of git-diff --submodule

2012-10-26 Thread Francis Moreau
Hi,

Thanks for answering

On Fri, Oct 26, 2012 at 9:08 PM, Jens Lehmann jens.lehm...@web.de wrote:
 Am 26.10.2012 16:07, schrieb Francis Moreau:
 I'm trying to use the --submodule switch with git-diff but doesnt
 understand the following behaviour:

 $ git diff 2c9a257718d1803de720f95766ff256d33accad5 HEAD
 diff --git a/configs b/configs
 index 16c6a89..ce12289 16
 --- a/configs
 +++ b/configs
 @@ -1 +1 @@
 -Subproject commit 16c6a89f245f0eed7fb0bce8e027c59fcf1d543e
 +Subproject commit ce12289c5bfca7b2c423d9f1871c13ad1ba1dc32

 but adding the --submodule option gives:

 $ git diff --submodule=log 2c9a257718d1803de720f95766ff256d33accad5 HEAD
 Submodule configs 16c6a89...ce12289 (commits not present)

 Could anybody enlight me ?

 The output Submodule configs 16c6a89...ce12289 (commits not present)
 contains same SHA-1s, only in their abbreviated form. That is the same
 information you get without the --submodule option, but in shorter
 format: it says the submodule moved from 16c6a89 to ce12289 in the
 given commit range of the superproject (and the ... part tells us it
 wasn't a fast-forward). The (commits not present) part indicates that
 even though git diff would have wanted to show you what happened in the
 submodule between 16c6a89 and ce12289 by displaying the first line of
 each commit message, it couldn't because these commit(s) are not present
 in the submodule repo. If you do a git log --oneline 16c6a89...ce12289
 inside the submodule you'll get an unknown revision error for the same
 reason.

Well, no the commits are present in the submodule, that's what I tried
to show with the first 'git-diff' command I did in my previous post
(without the --submodule switch).

And to check again, this is the result of git log:

  $ cd configs
  $ git log --oneline 16c6a89...ce12289
  ce12289 test 2

[...]

 Does that make it clearer?

Unforunately not really.

Thanks.
-- 
Francis
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Re: Can't understand the behaviour of git-diff --submodule

2012-10-26 Thread Jens Lehmann
Am 26.10.2012 21:54, schrieb Francis Moreau:
 On Fri, Oct 26, 2012 at 9:08 PM, Jens Lehmann jens.lehm...@web.de wrote:
 Am 26.10.2012 16:07, schrieb Francis Moreau:
 I'm trying to use the --submodule switch with git-diff but doesnt
 understand the following behaviour:

 $ git diff 2c9a257718d1803de720f95766ff256d33accad5 HEAD
 diff --git a/configs b/configs
 index 16c6a89..ce12289 16
 --- a/configs
 +++ b/configs
 @@ -1 +1 @@
 -Subproject commit 16c6a89f245f0eed7fb0bce8e027c59fcf1d543e
 +Subproject commit ce12289c5bfca7b2c423d9f1871c13ad1ba1dc32

 but adding the --submodule option gives:

 $ git diff --submodule=log 2c9a257718d1803de720f95766ff256d33accad5 HEAD
 Submodule configs 16c6a89...ce12289 (commits not present)

 Could anybody enlight me ?

 The output Submodule configs 16c6a89...ce12289 (commits not present)
 contains same SHA-1s, only in their abbreviated form. That is the same
 information you get without the --submodule option, but in shorter
 format: it says the submodule moved from 16c6a89 to ce12289 in the
 given commit range of the superproject (and the ... part tells us it
 wasn't a fast-forward). The (commits not present) part indicates that
 even though git diff would have wanted to show you what happened in the
 submodule between 16c6a89 and ce12289 by displaying the first line of
 each commit message, it couldn't because these commit(s) are not present
 in the submodule repo. If you do a git log --oneline 16c6a89...ce12289
 inside the submodule you'll get an unknown revision error for the same
 reason.
 
 Well, no the commits are present in the submodule, that's what I tried
 to show with the first 'git-diff' command I did in my previous post
 (without the --submodule switch).

Oh, that only shows the commits of the submodule recorded in the
superproject and not that they are present there (you'll even get
that output when the submodule was never initialized and is empty).

 And to check again, this is the result of git log:
 
   $ cd configs
   $ git log --oneline 16c6a89...ce12289
   ce12289 test 2
 
 [...]

That is weird, git diff --submodule should show that too. Is there
anything unusual about your setup? (The only explanation I can come
up with after checking the code is that your submodule has neither a
.git directory nor a gitfile or the objects directory in there doesn't
contain these commits)
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Re: Can't understand the behaviour of git-diff --submodule

2012-10-26 Thread Francis Moreau
On Fri, Oct 26, 2012 at 10:05 PM, Jens Lehmann jens.lehm...@web.de wrote:
[...]

 That is weird, git diff --submodule should show that too. Is there
 anything unusual about your setup? (The only explanation I can come
 up with after checking the code is that your submodule has neither a
 .git directory nor a gitfile or the objects directory in there doesn't
 contain these commits)

Oh now you're asking, I think the submodule has been added by using
the --reference option of git-submodule-add.

  $ cd configs
  $ cat .git
  gitdir: ../.git/modules/configs

Thanks
-- 
Francis
--
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